Improvement in perforators for automatic telegraphy



2 Sheeis--She'e,t 2., T. A. EDISDN.,

Perforatnrs for Automatic Telagra'pvhy. N0.147,3l2, PatentedFeb.l0,1874..

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UNH@ STATES'PATENTOFFICE frnOMAs A. noisoi, or* nlcififamefsnw Jn'nsnr,Assieson "To ,HIMSELF AND GnonGn HAnnrnGroN, or WASHINGTON, D. e.

IMPROVEMENT IN PERFORATORIS FIOR AUTOMATIC TELEGRAPHV.

Specification forming part of Letters Patent No. 147,31 2, datedFebruarv 1 0, 11.74 application'led l 'July 29, 1873.

Caen' 75.

' New Jersey, have invented an Improi-ement in Machinery'for PerforatingPaper for use in Automatic Telegraphing, of which tlie following .is aspecification: l

. This invention isv an improvementupon that set forth in Letters PatentNo. 121,601, granted to me December 5,1871, and a reference is herebyexpressly made to said patent for a more full and complete descriptionof those parts which areherin only generally referred My presentimprovement relates to the paper-carrier which feeds the paper, and tothemeans for giving the feed-motion-to said paper-carrier. l

ln the drawing, Figure 1 is a pla-n, partia1l5` in section, of a portionof my machine. Fig. 2 is an end eleva-tion of the paper-feed and dies;and Fig. 3 is a detached section, showing one of the cams a-ndslide-bars for giving the feed-motion, and also showing the cam foractuating the presser-lever.

The linger-keys a a. are in two ranges, and mounted on thefnlcrnnrsbaits l; b', and to these keys the vertical slide-bars e e arejointed. The eams f j' are secured to said slide-bars, and they aetuatethe presserlevers e e and sldeplates 7.1 7.', which latter .operate thepunches I, that perforate the strip of paper in the die Im n, and theseparts thus far described are similar in etmstrnetion and operation tothe corresponding parts set l'orth in aforesaid patent. The rock-shaft1", which gives lmotion to the paper-carrier, is mounted in the framed', and upon this shaft are the cams s', One for each slide-bar e, andeach ea-m is made with the arms 12 and 13,' and is upon a hab clamped tosaid shaft by a set-screw. lhe roller 15 upon the slidebar 0 takesagainst the arm 12 Ot'lv", and gives a partial rotation to the shat'ti", when the bar c is moved by a linger-kebI being depressed, andthea-mount of motion given to said shat't is determined. by the arm 13of s', which 'comes against the rear ot' the eam-platefon e, as lshownin Fig. il, or against the bar c itself, and acts as a stop to preventthe shaft being turned beyond the point necessaryor giving the propermotion tothe papercarrier t.

These cams s' are easily adjustedv upon the shaft fr', and each cam ispositioned so that when a linger-key is depressed, said shaft isv onlyturned the amount` required for moving the carrier t,.and feeding thepaper for the character that is perforated by the depression ot' thatkey.

The rock-shaft v gives mot-ion to the papera:

carrier t by the arm u', and this carrier* made with a thin meta-lplate, t1, which moves infront of the fence s, and to this plate t1 thepaper is clamped by the pawl u when said paper and carrier are movedforward, and said pawl is turned and lifted from o' the paper and platewhen the carrier is moved back' ward.

To operate this pawl :1,1 employ the springarni f` and rack r, and thisarm is secured to the pivot upon which the pawl u turns. As the carriert moves backward', the end of the arm enters between two of the teeth ofr, and said arm being diagonal to said rack r, the arm yields toaccommodate. itselfl to the more ment of the carrier, and in so doingacts as a. lever and swings the pa-wl u ottl of the paper to theposition shown by dotted lines in Fig. 1. The pawl uis kept in thisposition by the end of the arm f1 riding over the teeth of the raekduring the ent-ire backward movement Ot' the carrier. Upon the carriermoving forward, the spring-arm swings the pawl u and brings it4 incol'ltz'let'with the paper,and clamps it firmly to the plate t, and saidpaper isfed ori' carried ibrward by said plate and paw1,.the

spring riding t2 over the ends of the teeth andi' The spring fi" keepsthe strip of paper in lts proper position holdin g the pawl to thepaper.

aga-inst -thc fence s, and, by its friction, prevents the paper beingcarried bymomentum a-t'tei the carrier stops.

The operation ot' this machine, as before mentioned, is similar to thatset forth in aforesaid patent, the punches i perforating the paperduring the time the carrier is moving back` 2 'Megane ward, und this,backward movement is a dis,` anisni, substantially as and for thepurpose.; I

tance equal to ttie'spaco for the eharaeter that set forth. y isperforz'tteri` and the intervening distance.. 2. The spring-arm t2upon-the pawlu, in

'The spring 16 returns theparts to their norcombination With'the rack lvand reciprocating mal position, and I remark that by thisoonmeehanism,.substantially as set forth. struction the adjustment ofthe paper-feed is. Signed by ine this 24th day of March, A. D. Yveryeasily made, and the parts are light and 1873, v not liable to becomeinjured or disarranged. l.

'I claim as my invention- THOMAb A EDISON' 1. The stops 13 and oalnarmsl2 upon the 'Witnessesz shafty o', in combination With the linger-keys aGEO. T. PINCKNEY,

a', slides c, rollers l5, and papenfeeding meeh- CEAS. H. SMITH.

